mirror of
https://github.com/visioncortex/vtracer.git
synced 2026-09-29 15:31:19 -07:00
Chris Tsang
e46c971845
Replace the 0.6.x single-pipeline crate with a stage-based framework, per docs/design/. Implements Motivation pillars 1–4 (frontend, curve fitting, color fitting, optimizer); mosaic (5) and bindings are deferred. Workspace: - crates/vtracer — the framework library (wasm-safe, no I/O) - crates/vtracer-cli — thin CLI wrapper (clap 4 + image I/O) - cmdapp/ and webapp/ excluded from the workspace (git-preserved) Stages behind object-safe traits, composed by a Pipeline driver: - Frontend: ColorClusterFrontend (+ transparency keying), BinaryFrontend - CurveFitter: Pixel / Polygon / Spline (region tracing via visioncortex) - ColorFitter: Identity, FixedPalette (OKLab-nearest), AutoQuantize (area-weighted median cut), MergeAdjacent - OptimizerPass: QuantizePass, SimplifyPass - SvgWriter: relative/absolute shortest encoding, H/V/S shorthands, compact number formatting, <g fill> grouping visioncortex is a path dependency on the local 0.9.0 checkout. Verified: 14 unit/integration tests pass; framework builds for wasm32-unknown-unknown; CLI output renders faithfully via rsvg.
89 lines
2.5 KiB
Rust
89 lines
2.5 KiB
Rust
//! End-to-end pipeline smoke tests over synthetic images.
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use vtracer::{ColorImage, ColorMode, Config, FitMode, Hierarchical};
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/// Build a `size × size` image split into two vertical color bands.
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fn two_band_image(size: usize) -> ColorImage {
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let mut pixels = Vec::with_capacity(size * size * 4);
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for _y in 0..size {
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for x in 0..size {
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let (r, g, b) = if x < size / 2 {
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(220, 40, 40)
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} else {
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(40, 40, 220)
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};
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pixels.extend_from_slice(&[r, g, b, 255]);
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}
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}
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ColorImage {
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pixels,
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width: size,
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height: size,
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}
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}
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fn assert_valid_svg(svg: &str) {
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assert!(svg.contains("<svg"), "missing <svg> element:\n{svg}");
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assert!(svg.trim_end().ends_with("</svg>"), "missing </svg> close");
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assert!(svg.contains("<path"), "expected at least one path:\n{svg}");
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}
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#[test]
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fn default_color_pipeline_produces_svg() {
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let img = two_band_image(32);
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let svg = Config::default().build().unwrap().to_svg(&img).unwrap();
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assert_valid_svg(&svg);
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}
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#[test]
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fn all_fit_modes_produce_svg() {
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let img = two_band_image(32);
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for mode in [FitMode::Pixel, FitMode::Polygon, FitMode::Spline] {
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let config = Config {
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mode,
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..Config::default()
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};
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let svg = config.build().unwrap().to_svg(&img).unwrap();
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assert_valid_svg(&svg);
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}
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}
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#[test]
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fn binary_pipeline_produces_svg() {
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let img = two_band_image(32);
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let config = Config {
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color_mode: ColorMode::Binary,
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..Config::default()
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};
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let svg = config.build().unwrap().to_svg(&img).unwrap();
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assert_valid_svg(&svg);
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}
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#[test]
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fn optimize_levels_shrink_or_match() {
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let img = two_band_image(48);
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let mut sizes = Vec::new();
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for level in [0u8, 1, 2] {
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let config = Config {
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optimize: level,
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..Config::default()
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};
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let svg = config.build().unwrap().to_svg(&img).unwrap();
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assert_valid_svg(&svg);
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sizes.push(svg.len());
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}
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// Higher optimization should never produce larger output than level 0.
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assert!(sizes[1] <= sizes[0], "opt1 {} > opt0 {}", sizes[1], sizes[0]);
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assert!(sizes[2] <= sizes[0], "opt2 {} > opt0 {}", sizes[2], sizes[0]);
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}
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#[test]
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fn cutout_is_reported_unsupported() {
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let config = Config {
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hierarchical: Hierarchical::Cutout,
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..Config::default()
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};
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let err = config.build().err().expect("cutout should be unsupported");
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assert!(err.to_string().contains("mosaic"));
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}
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